The relationship between belief and knowledge is subtle. Believers in a claim typically say that they "know" that claim. For instance, those who believe that the Sun is a god will report that they "know" that the Sun is a god. However, the terms "belief" and "knowledge" are used differently by philosophers.

Epistemology is the philosophical study of knowledge and belief. A primary problem for epistemology is exactly what is needed in order for us to have knowledge. In a notion derived from Plato's dialogue "Theaetetus", philosophy has traditionally defined knowledge as "justified true belief". The relationship between belief and knowledge is that a belief is knowledge if the belief is "true", and if the believer has a "justification" (reasonable and necessarily plausible assertions/evidence/guidance) for believing it is true.

A false belief is not considered to be knowledge, even if it is sincere. A sincere believer in the flat earth theory does not "know" that the Earth is flat. Similarly, a truth that nobody believes is not knowledge, because in order to be knowledge, there must be some person who knows it.

Later epistemologists have questioned the "justified true belief" definition, and some philosophers have questioned whether "belief" is a useful notion at all.

Belief as a psychological theory

Mainstream psychology and related disciplines have traditionally treated belief as if it were the simplest form of mental representation and therefore one of the building blocks of conscious thought. Philosophers have tended to be more rigorous in their analysis and much of the work examining the viability of the belief concept stems from philosophical analysis.

The concept of belief presumes a subject (the believer) and an object of belief (the proposition). So like other propositional attitudes, belief implies the existence of mental states and intentionality, both of which are hotly debated topics in the philosophy of mind and whose foundations and relation to brain states are still controversial.

Beliefs are sometimes divided into "core beliefs" (those which you may be actively thinking about) and "dispositional beliefs" (those which you may ascribe to but have never previously thought about). For example, if asked 'do you believe tigers wear pink pajamas ?' a person might answer that they do not, despite the fact they may never have thought about this situation before. [Bell, V., Halligan, P.W. & Ellis, H.D. (2006) A Cognitive Neuroscience of Belief. In P.W. Halligan & M. Aylward (eds) The Power of Belief. Oxford: Oxford University Press.]

That a belief is a mental state has been seen, by some, as contentious. While some philosophers have argued that beliefs are represented in the mind as sentence-like constructs others have gone as far as arguing that there is no consistent or coherent mental representation that underlies our common use of the belief concept and is therefore obsolete and should be rejected.

This has important implications for understanding the neuropsychology and neuroscience of belief. If the concept of belief is incoherent or ultimately indefensible then any attempt to find the underlying neural processes which support it will fail. If the concept of belief does turn out to be useful, then this goal should (in principle) be achievable.

Philosopher Lynne Rudder Baker has outlined four main contemporary approaches to belief in her book "Saving Belief":

* "Our common-sense understanding of belief is correct" - Sometimes called the ‘mental sentence theory’, in this conception, beliefs exist as coherent entities and the way we talk about them in everyday life is a valid basis for scientific endeavour. Jerry Fodor is one of the principal defenders of this point of view.* "Our common-sense understanding of belief may not be entirely correct, but it is close enough to make some useful predictions" - This view argues that we will eventually reject the idea of belief as we use it now, but that there may be a correlation between what we take to be a belief when someone says 'I believe that snow is white' and however a future theory of psychology will explain this behaviour. Most notably philosopher Stephen Stich has argued for this particular understanding of belief.* "Our common-sense understanding of belief is entirely wrong and will be completely superseded by a radically different theory which will have no use for the concept of belief as we know it" - Known as eliminativism, this view, (most notably proposed by Paul and Patricia Churchland), argues that the concept of belief is like obsolete theories of times past such as the four humours theory of medicine, or the phlogiston theory of combustion. In these cases science hasn’t provided us with a more detailed account of these theories, but completely rejected them as valid scientific concepts to be replaced by entirely different accounts. The Churchlands argue that our common-sense concept of belief is similar, in that as we discover more about neuroscience and the brain, the inevitable conclusion will be to reject the belief hypothesis in its entirety.* "Our common-sense understanding of belief is entirely wrong, however treating people, animals and even computers as if they had beliefs, is often a successful strategy" - The major proponents of this view, Daniel Dennett and Lynne Rudder Baker, are both eliminativists in that they believe that beliefs are not a scientifically valid concept, but they don’t go as far as rejecting the concept of belief as a predictive device. Dennett gives the example of playing a computer at chess. While few people would agree that the computer held beliefs, treating the computer as if it did (e.g. that the computer believes that taking the opposition’s queen will give it a considerable advantage) is likely to be a successful and predictive strategy. In this understanding of belief, named by Dennett "the intentional stance", belief based explanations of mind and behaviour are at a different level of explanation and are not reducible to those based on fundamental neuroscience although both may be explanatory at their own level.

Is belief voluntary?

Most philosophersWho|date=October 2008 hold the view that belief formation is primarily spontaneous and involuntary. Many peopleWho|date=October 2008 only accept information supporting narrow and specific beliefs, rather than the more challenging broad study across cultures. Few are able to live without drawing many automatic conclusions, as the human mind seems to prefer certainty, even if it is most likely, in error. This occurs, most often, when people are forced to make either "for or against" choices, in a polarized world of so-called binary choices (either/or).

Belief is most often mandatory for group affiliation or "official" membershipFact|date=October 2008. In many cases, people bolster belief in which they are emotionally involved by attempted action to resolve contradictions experienced directly. This is done by creative rationializations to reduce experential dissonance. Human imagination serves as the catalyst for creating, modification and perpetuation of belief.

Hope for a world different or better than the present world allows many people to hold information contradictory to their direct experience as valid. This phenomenon is known as dualism. People often believe merely what they wish to be trueFact|date=October 2008, in their mind, no matter how much it stands in direct opposition to experiential life. Belief, as a component of the human mind, is true speculation when assumptions cannot be verified logically reconciled to the external world.

It is impossible for all variations of world belief, in over 6.6 Billion minds, to be simultaneously true. The observation of mutually exclusive belief variation, in various minds, clearly demonstrates the phenomena of diverging human imagination and personal modification. From an individual and/or group viewpoint, the preferred belief is strongly imagined to be the one and only unique "truth," fostering an agenda with perceived rewards and very specific group requirements.

Delusional beliefs

Delusions are defined as beliefs in psychiatric diagnostic criteria (for example in the "Diagnostic and Statistical Manual of Mental Disorders"). Psychiatrist and historian G. E. Berrios has challenged the view that delusions are genuine beliefs and instead labels them as "empty speech acts", where affected persons are motivated to express false or bizarre belief statements due to an underlying psychological disturbance. However, the majority of mental health professionals and researchers treat delusions as if they were genuine beliefs.

In Lewis Carroll's Through the Looking-Glass, the White Queen says, "Why, sometimes I've believed as many as six impossible things before breakfast." This is often quoted in mockery of the common ability of people to entertain beliefs contrary to fact.

Limiting beliefs

The term "limiting belief" is used for a belief that inhibits exploration of a wider cognitive space than would otherwise be the case. Examples of limiting beliefs are seen both in animals and people. These may be strongly held beliefs, or held unconsciously, and are often tied in with self-image or perceptions about the world. Everyday examples of limiting beliefs:

* That one has specific capabilities, roles, or traits which cannot be escaped or changed.* That one cannot succeed so there is no point committing to trying.* That a particular opinion is right; therefore, there is no point considering other viewpoints.* That a particular action or result is the only way to resolve a problem.

** [http://www.beliefnet.com/story/76/story_7665_1.html Beliefnet] - Belief-o-matic* [http://www.hippylife.co.uk/index.php?option=com_content&task=section&id=14&Itemid=40 Compare Different Beliefs] Information on different religions/beliefs* [http://www.pariharam.com/ Beliefs and Practices] Belief refers to a part of a wider Spirituality* [http://www.nobeliefs.com/beliefs.htm Think without Beliefs] Does rational thinking require the adherence to beliefs at all?* [http://www.isgodreligious.com/ Religious Beliefs] Submit a belief and read about others' thoughts.* [http://ajburger.homestead.com/ethics.html Ethics of Belief] Classic WK Clifford essay that belief by its nature is unethical, with counterpoint by William James

Look at other dictionaries:

Belief — • That state of the mind by which it assents to propositions, not by reason of their intrinsic evidence, but because of authority Catholic Encyclopedia. Kevin Knight. 2006. Belief Belief … Catholic encyclopedia

belief — be·lief n: a degree of conviction of the truth of something esp. based on a consideration or examination of the evidence compare knowledge, suspicion Merriam Webster’s Dictionary of Law. Merriam Webster. 1996 … Law dictionary

belief — 1 Belief, faith, credence, credit are comparable when they mean the act of one who assents intellectually to something proposed or offered for acceptance as true or the state of mind of one who so assents. Belief is less restricted in its… … New Dictionary of Synonyms

Belief — Be*lief , n. [OE. bileafe, bileve; cf. AS. gele[ a]fa. See {Believe}.] 1. Assent to a proposition or affirmation, or the acceptance of a fact, opinion, or assertion as real or true, without immediate personal knowledge; reliance upon word or… … The Collaborative International Dictionary of English

BELIEF — The Bible In the Bible there are no articles of faith or dogmas in the Christian or Islamic sense of the terms. Although trust in God is regarded as a paramount religious virtue (Gen. 15:6; Isa. 7:9; cf. Job 2:9), there is nowhere in Scripture an … Encyclopedia of Judaism